1968 Ford F Series Trucks Ring and Pinion Set F-250 - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear guaranteed to replace your current 1968 Ford F Series Trucks Ring and Pinion Set F-250 - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear. 1968 Ford F Series Trucks Ring and Pinion Set comes new OEM 1968 Ford F Series Trucks Ring and Pinion Set aftermarket new 1968 Ford F Series Trucks Ring and Pinion Set of remanufactured 1968 Ford F Series Trucks Ring and Pinion Set F-250 - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear.